Lithium nitride
Lithium Nitride[edit]
Lithium nitride is an inorganic compound with the chemical formula Li_N. It is the only stable alkali metal nitride and is a red or purple solid. Lithium nitride is notable for its high ionic conductivity and is used in various applications, including as a precursor to other lithium compounds and in battery technology.
Structure[edit]
Lithium nitride crystallizes in a hexagonal structure, which is depicted in the adjacent image. The structure consists of layers of lithium ions and nitrogen ions. Each nitrogen ion is surrounded by six lithium ions, forming a trigonal bipyramidal arrangement. This unique structure contributes to its high ionic conductivity.
Properties[edit]
Lithium nitride is a highly reactive compound. It reacts with water to produce ammonia and lithium hydroxide:
- Li_N + 3 H_O _ 3 LiOH + NH_
It is also reactive with carbon dioxide and can be used to absorb this gas. The compound is stable in dry air but decomposes in moist air.
Applications[edit]
Lithium nitride is used in the synthesis of other lithium compounds. It serves as a precursor in the production of lithium amide and lithium hydride. Due to its high ionic conductivity, it is also of interest in the development of solid-state batteries.
